๐ฆ Volume Indicators
Volume indicators fold trading activity into the analysis. Price tells you what happened; volume tells you how convinced the market was while it happened.
๐ก What This Group Measures
A price move on high volume reflects broad participation and is more likely to persist; the same move on thin volume is fragile. Volume indicators combine price direction with traded quantity to build a running measure of buying or selling pressure that price alone cannot reveal.
๐ Indicators in This Category
| Indicator | What It Measures | Key Use | Details |
|---|---|---|---|
| OBV | Cumulative volume, signed by price direction | Trend confirmation / divergence | ๐ |
| MFI | "Volume-weighted RSI" | Overbought/oversold with volume confirmation | ๐ |
๐ฅ Data Requirements
| Indicator | Inputs | Notes |
|---|---|---|
| OBV | close, volume |
Only the sign of the price change matters, not its size |
| MFI | high, low, close, volume |
Uses the typical price \((H+L+C)/3\) weighted by volume |
๐ Comparison Table
| Indicator | Default Period | Output Range | Uses Price Magnitude? |
|---|---|---|---|
| OBV | โ (no lookback) | Unbounded, rebased to 0 at range start | No (sign only) |
| MFI | 14 | 0โ100 | Yes (typical price ร volume) |
flowchart LR
C["๐น Close"] --> SGN["โโ Sign of ฮClose"]
V["๐ฆ Volume"] --> SGN
SGN --> OBV["๐ OBV (cumulative)"]
HLCV["๐ High / Low / Close / Volume"] --> MF["๐ฐ Money Flow"]
MF --> MFI["๐ธ MFI (0โ100)"]OBV has no period parameter
Unlike every other indicator in LibreFolio, OBV takes no configurable parameters โ it is a pure running sum. LibreFolio rebases the displayed series to zero at the start of the requested chart range, so only the shape of the curve (its slope and divergences from price) is meaningful, not its absolute level.
๐ Related
- ๐ All Indicators โ Full catalogue with financial and signal-processing views
- ๐ช Momentum Indicators โ Oscillators MFI is closely related to
- ๐ Volatility Indicators โ Dispersion, independent of volume